1 files changed, 70 insertions, 0 deletions
diff --git a/pkg/snowflake/lib/util.go b/pkg/snowflake/lib/util.go
new file mode 100644
index 0000000..0eb8ddd
--- /dev/null
+++ b/pkg/snowflake/lib/util.go
@@ -0,0 +1,70 @@
+package lib
+
+import (
+	"log"
+	"time"
+)
+
+const (
+	LogTimeInterval = 5 * time.Second
+)
+
+type BytesLogger interface {
+	AddOutbound(int)
+	AddInbound(int)
+}
+
+// Default BytesLogger does nothing.
+type BytesNullLogger struct{}
+
+func (b BytesNullLogger) AddOutbound(amount int) {}
+func (b BytesNullLogger) AddInbound(amount int)  {}
+
+// BytesSyncLogger uses channels to safely log from multiple sources with output
+// occuring at reasonable intervals.
+type BytesSyncLogger struct {
+	outboundChan chan int
+	inboundChan  chan int
+}
+
+// NewBytesSyncLogger returns a new BytesSyncLogger and starts it loggin.
+func NewBytesSyncLogger() *BytesSyncLogger {
+	b := &BytesSyncLogger{
+		outboundChan: make(chan int, 5),
+		inboundChan:  make(chan int, 5),
+	}
+	go b.log()
+	return b
+}
+
+func (b *BytesSyncLogger) log() {
+	var outbound, inbound, outEvents, inEvents int
+	ticker := time.NewTicker(LogTimeInterval)
+	for {
+		select {
+		case <-ticker.C:
+			if outEvents > 0 || inEvents > 0 {
+				log.Printf("Traffic Bytes (in|out): %d | %d -- (%d OnMessages, %d Sends)",
+					inbound, outbound, inEvents, outEvents)
+			}
+			outbound = 0
+			outEvents = 0
+			inbound = 0
+			inEvents = 0
+		case amount := <-b.outboundChan:
+			outbound += amount
+			outEvents++
+		case amount := <-b.inboundChan:
+			inbound += amount
+			inEvents++
+		}
+	}
+}
+
+func (b *BytesSyncLogger) AddOutbound(amount int) {
+	b.outboundChan <- amount
+}
+
+func (b *BytesSyncLogger) AddInbound(amount int) {
+	b.inboundChan <- amount
+}